高层建筑在爆破地震波作用下振动传播规律

为了解决爆破地震波对高层建筑影响的问题,基于爆破地震波的特征及相关因素,以贵阳市观山湖区某一道路爆破工程为例,通过爆破振动现场测试,分析了爆破地震波作用下高层建筑结构振动传播规律。结果表明:爆破地震波作用下测点的垂向振动速度恒大于切向和径向振动速度;随着距爆源高差的增加,爆破振动速度逐渐增大;随着距爆源水平距离的增加,爆破振动速度逐渐减小。通过拟合分析,得出衰减系数α随着高差的降低也逐渐减小;高程影响系数在测点和爆源最大高差时最大。

Vibration propagation law of high-rise building under blasting seismic wave

In order to solve the problem of the impact of blasting seismic wave on high-rise building, based on the characteristics of blasting seismic waves and related factors, taking a road blasting project in Guanshan Lake District, Guiyang as an example, through the blasting vibration field test, the vibration propagation law of the high-rise building structure under the action of blasting seismic waves is analyzed. The results show that the measurement points under the action of blasting seismic waves the vertical vibration speed is always greater than the tangential and radial vibration velocity. As the height difference from explosion source increases, the blasting vibration speed gradually increases, as the horizontal distance from explosion source increases, the blasting vibration speed gradually decreases. Through fitting analysis, it is concluded that the attenuation coefficient α gradually decreases as the height difference decreases and the height difference influence coefficient is the largest when the maximum height difference between the measuring point and the explosion source.